All Questions ⁺⁰237688 Questions

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help

There are only red marbles and green marbles in a bag. The ratio of red marbles to green marbles in the bag is 4:7. Julia then adds 90 red marbles and 36 green marbles to the bag, which makes the probability of selecting a red marble from the bag on a random read more ..

Guest Dec 30, 2021

0

301

1

Geometry

Three concentric circles are drawn such that the area of the smallest circle is equal to the area of each of the rings. If the radius of the largest circle is 18 cm, what is the radius of the smallest circle?

Guest Dec 30, 2021

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319

1

Please help ASAP

Arc is a quarter-circle with center . The shaded region is "rolled" along a straight board until it reaches its original orientation for the first time with point landing at point . If cm, read more ..

Guest Dec 30, 2021

0

462

1

Rearrange y =1/2 x + 1 to make x the subject.

Rearrange y =1/2 x + 1 to make x the subject.

Guest Dec 30, 2021

0

318

1

Geometry

A parallelogram has sides measuring 7 and 9. Its shorter diagonal has a length of 8. Find the measure of the longer diagonal.

Guest Dec 30, 2021

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309

1

coordinates

For every value of a, the graph of each of these three equations is a line:
ax + y = 1
x + ay = 1
x + y = 16 read more ..

Guest Dec 30, 2021

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310

1

coordinates

A and B are constants such that the graphs of xy = B and y = Ax^2 + B intersect at the points (2,8). Write the ordered pair (A,B).

Guest Dec 30, 2021

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306

1

help Graphing

The graph of y = f(x) is shown in red below. For how many values of c is f(c) = -1?

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Guest Dec 30, 2021

0

311

1

Number Theory

The sum of 1+2+3+4+5+6+7+8+9+10+11+12 is divisible by how many natural numbers between 1 and 10?

Guest Dec 30, 2021

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356

2

Counting

How many 3-digit numbers contain exactly one 0? Examples include 510 and 770.

Guest Dec 30, 2021

0

273

0

Base Numbers

A base-10 integer n can be represented $32_a$ as in one base and $13_b$ in another base, where a and b are any integer bases larger than 3. What is the smallest possible sum a+b?

Guest Dec 30, 2021

0

394

2

Coordinates

What is the area, in square units, of the square with the four vertices at A(0,0), B(-5,-7), C(2,12), and D(7,5)?

Guest Dec 30, 2021

+1

414

1

Math

A pen factory signed a contract to produce a number of souvenir pens for a company.
The pen company needs to produce pens in 5 days to accomplish the contract.
On the first day, it produced 1/5 of the required number of pens.
On the second read more ..

Guest Dec 30, 2021

0

421

2

Geometry

Let A, B, and C, be three points on a line such that AB = 2 and BC = 5. Semicircles are drawn with diameters AB, AC, and BC. Find the area of the shaded region.

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Guest Dec 30, 2021

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257

0

Geometry

Minor arc AB in the diagram is 30 degrees and the radius of the circle is 16. Find the area of circular segment AB.

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Guest Dec 30, 2021

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312

1

Clock problem

The display of a 24-hour digital clock shows hours and minutes in the format XX:XX. For what fraction of a day is at least one 0 displayed on this clock?

Guest Dec 30, 2021

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328

2

help asap

(a) Let be defined by Show that f has no inverse function.
(b) Let be defined by Show that g has an inverse function.

Thanks in advance read more ..

Guest Dec 30, 2021

0

424

1

+11

please help due soon

Here are two functions:$$\begin{array}{ccc} f(x) & = & 3x^2-2x+ 4\\ g(x) & = & x^2-kx-6 \end{array}$$If $f(10) - g(10) = 10,$ what is the value of $k?$

oTechz Dec 30, 2021

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247

0

trig

In triangle XYZ, we have angle X = 90 and tan Y = 3. If YZ = 4, then what is XY?

Guest Dec 30, 2021

Dec 29, 2021

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292

1

PLS HELP ASAP

How many paths of minimum length are there from A to B in the grid below?
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Guest Dec 29, 2021

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299

1

Algebra problem

Miles drives the same path to and from work. If he averages 50 miles per hour on the way to work and 75 miles per hour on the way from work, what is the average speed of his entire commute?

Guest Dec 29, 2021

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328

1

3d Geometry

A cylinder and a cone have the same height, but the base radius of the cylinder is only 1/3 that of the cone. If the volume of the cylinder is 7, then what is the volume of the cone

Guest Dec 29, 2021

+2

5

661

3

+15135

a billion dollars

Is a billion dollars the same in every NATO country?

asinus Dec 29, 2021

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